And again he begat children by Earth, to wit, the Titans
as they are named: Ocean, Coeus, Hyperion, Crius, Iapetus, and, youngest of all, Cronus;
also daughters, the Titanides as they are called: Tethys, Rhea, Themis, Mnemosyne, Phoebe,
Dione, Thia.Compare Hes. Th.
132ff. who agrees in describing Cronus as the youngest of the brood. As Zeus, who
succeeded his father Cronus on the heavenly throne, was likewise the youngest of his
family （Hes. Th. 453ff.）, we may
conjecture that among the ancient Greeks or their ancestors inheritance was at one time
regulated by the custom of ultimogeniture or the succession of the youngest, as to which
see Folk-Lore in the Old Testament, i.429ff. In the secluded
highlands of Arcadia, where ancient customs and
traditions lingered long, King Lycaon is said to have been succeeded by his youngest
son. See Apollod. 3.8.1.